CVE-2023-39240: ASUS RT-AX55、RT-AX56U_V2 - Format String - 3
First published: Thu Sep 07 2023(Updated: )
It is identified a format string vulnerability in ASUS RT-AX56U V2’s iperf client function API. This vulnerability is caused by lacking validation for a specific value within its set_iperf3_cli.cgi module. A remote attacker with administrator privilege can exploit this vulnerability to perform remote arbitrary code execution, arbitrary system operation or disrupt service.
Credit: twcert@cert.org.tw twcert@cert.org.tw
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Asus Rt-ax55 Firmware | =3.0.0.4.386_50460 | |
| ASUS RT-AX55 | ||
| Asus Rt-ax56u V2 Firmware | =3.0.0.4.386_50460 | |
| ASUS RT-AX56U V2 | ||
| Asus Rt-ac86u Firmware | =3.0.0.4_386_51529 | |
| ASUS RT-AC86U | ||
| All of | ||
| Asus Rt-ax55 Firmware | =3.0.0.4.386_50460 | |
| ASUS RT-AX55 | ||
| All of | ||
| Asus Rt-ax56u V2 Firmware | =3.0.0.4.386_50460 | |
| ASUS RT-AX56U V2 | ||
| All of | ||
| Asus Rt-ac86u Firmware | =3.0.0.4_386_51529 | |
| ASUS RT-AC86U |
Remedy
RT-AX55: update to 3.0.0.4.386_51948 RT-AX56U_V2: update to 3.0.0.4.386_51948
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this format string vulnerability in ASUS RT-AX56U V2’s iperf client function API?
The vulnerability ID is CVE-2023-39240.
What is the severity rating of CVE-2023-39240?
The severity rating of CVE-2023-39240 is 9.8 (Critical).
How does this vulnerability affect ASUS RT-AX55?
ASUS RT-AX55 is not vulnerable to CVE-2023-39240.
How does this vulnerability affect ASUS RT-AX56U V2?
ASUS RT-AX56U V2 with firmware version 3.0.0.4.386_50460 is affected by CVE-2023-39240.
What is the recommended action to fix CVE-2023-39240?
Apply the latest firmware update (version 3.0.0.4.386_50460) from ASUS for RT-AX56U V2 to fix the vulnerability.
- collector/nvd-index
- agent/author
- agent/type
- agent/softwarecombine
- agent/remedy
- agent/title
- agent/severity
- agent/weakness
- agent/references
- agent/first-publish-date
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/description
- collector/epss-latest
- source/FIRST
- agent/epss
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/asus
- canonical/asus rt-ax55 firmware
- version/asus rt-ax55 firmware/3.0.0.4.386_50460
- canonical/asus rt-ax55
- canonical/asus rt-ax56u v2 firmware
- version/asus rt-ax56u v2 firmware/3.0.0.4.386_50460
- canonical/asus rt-ax56u v2
- canonical/asus rt-ac86u firmware
- version/asus rt-ac86u firmware/3.0.0.4_386_51529
- canonical/asus rt-ac86u